feat: switch to separate build script

build.sh

@@ -0,0 +1,10 @@
+# remove the default firefox (from fedora) in favor of the flatpak
+rpm-ostree override remove firefox firefox-langpacks
+
+echo "-- Installing RPMs defined in recipe.yml --"
+rpm_packages=$(yq '.rpms[]' < /etc/ublue-recipe.yml)
+for pkg in $rpm_packages; do \
+    echo "Installing: ${pkg}" && \
+    rpm-ostree install $pkg; \
+done
+echo "---"